Improvement in dlst



R. F. SMITH.

Turpentine Still.

Patented Oct. 2, 1847 N. PETERS. FlwloJ-fllwgnpMn Washington, D. c.

" UNITED STATES PATENT Orrieno R. F. SMITH, or CHARLESTON, SOUTH CAROLINA.

IMPROVEMENT IN DI-STJLLING TU RPENT l NE.

Specification forming part of Letters Patent No. 5,320, dated October 2, 1847.

To aZZ whom it may concern:

Be it known that I, R. F. SMITH, of Charles ton, in the district of Charleston and State of South Carolina, have invented a new and useful Improvement Applicable to Stills and Evaporating-Vessels; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being made to the annexed drawings, making a part of this specification, in which- Figures 1 and 2 are perspective views, and Figs. 3 and 4 are sections.

a a a a is the still; I) b b, outer vessel for oil or other liquid bath, fitting close at the rim; 0, cap of the still, placed not in the middle but to one side of the middle; d d d, circular shaft passing through the middle of the still, fitting snugly in the crown-box f f on the crown of the still, and resting in socket O on the, bottom; 5 g, hollow round box attached to the crown-box and encircling shaft; 71, force-pump to supply this'box with water through pipe t. 70 is the tube in the shaft, to conduct the water to the bottom of the still, the water passing from the box 9 through a few small holes pireced in that part of shaft working in this box; m m m m, screw-shaped arms to the shaft for disturbing the boiling liquid or, mass andaccelerating the escape of the vapor. Of these there may be one or more.

a n are stays to support these arms; 12, pipe to carry off from' the outer vessel the gas that may form from baths of inflammable substances whenever used;- q, spout to empty still; 0', heat-regulator; s 88 s, gearing to work the shaft and pump, 0 be fixed as may suit ones convenience.

The nature of my invention consists in providing a machine for accelerating the distillation and evaporation of substances subjected to heat, for saving from burning and discoloration the gaseous and otherevaporations, as well as the residues left after these are thrown off, and for the increased safety in the process of distillation, particularly of resinous juices, by checking their rising tendency in the vessels when boiling.

- from being consumed, as now happens.

' manufacturing turpentine.

To understand the mode of using my invention, I proceed to describe its operations: The shaft is set in'" motion when the liquid is about evaporating, and continued so till the vapor is all thrown off. The constant disturbance of the liquid by these revolutions,

and the upward direction given to it by the screw-formed arms, will not only prevent it from being burned about the sides and bottom of thestill, but will help to liberate the vapor more freely. still inclines to boil over much, increase the revolutions of the shaft, and the boiling will principally, to the distillation of turpentine.

I was enabled to complete the process in about half the time employed by the mode now in use in l\ orth Carolina and-elsewhere, consuming but half the quantity of fuel. I procured more spirits from the gum than is now obtained by saving the spirits formed about the sides of the vessel nearest the fire The rosin left after the evaporation of the spirits is, with proper care, not burned by my process, and bears a greater value in commerce; and not the least important application of my improvement is the increased safety in According to the present method, 110- means being used to facilitate the risingof the vapor through the fluid or mass boiling, this is forced up often too high for the capacity of the vessel throwing off the cap of the still and running over into thefire.

security in the whole process of manufacturing. 7

My drawings and model have been made with an outer vessel for the purpose of fun If the substance in the I found that by an active revolution of the shaft I could subdue this boil-' nishing, by baths, a regular heat, for delicate tially the same, not confining myself to the uses; but I design using the still with 01' without this.

WVhat I claim as my invention, and desire to secure by Letters Patent, is

The application of the shaft with its appendages to the distillation of turpentine in the manner described, or any other substanform of the stirring apparatus. 5 Charleston, South Carolina, February 6, 1847.

R. F. SMITH.

\Vitnesses:

W. H. TURNER, R. 0. SMITH. 

